If you are looking to connect to other classrooms and teachers, from around the world, then this resource might be very helpful.
Edublogs update their list of classroom blogs every six months or so. The update for May 2019 is now current.
This is will prove to be a valuable resource for EdTech teachers. Entries can be filtered to include things such as Year Levels, Countries, Twitter handles, and whether student blogs are facilitated.
You can find out more at the link: https://www.theedublogger.com/class-blogs-update/